Centrifugal-separator basket



Sept. 27, 1927- w; J L'ANCHARD CENTRIFUGAL SEPARATOR BAS KET Filed June1, 1925 2 Sheets-Sheet 1 INVENTOR.

Sept." "27, 1927. v

v W. J. BLANCHARD CENTRIFUGAL SEPARATOR BASKET 2 Sheets-Sheet 2 FiledJune 1, 1925 1N! 'EN TOR. I GIG/far ffi/anc/zarl I Patented Sept. 27,1927.

UNITED STATES WALTER J. BLANCI-IARD, OF CLEVELAND, OHIO.

CENTRIFUGAL-SEPARA'IOR BASKET.

Application filed June 1, 1925.

The present invention relates to centrifugal separator baskets and moreparticularly to a separator basket construction adapted forautomatically and continuously separating certain materials havingdifferent specific gravities. The present basket makes use of theprinciple of balanced columns, which may be best illustrated byconsidering a tube bent to the shape of a V with both ends open, one legof the tube being longer than the other by a certain amount which isdependent upon the relative weights of the materials being separated.Then assume that the tube is revolving in an orbit with the point of theV outward from the center of rotation.

Assume that the shorter leg of the tube is full of the heavy element ofthefeed mixture which is being separated and that the longer leg isfilled with a combination column, which starting from the point of the Vconsists of a section of heavy material,

. a section of mixed material and a section of material section, thismaterial will separate and the light material will climb the upperlonger leg thus forcing separated light material therefrom, and theheavy material will be forced toward the point of the V and will add tothe section of heavy material above the point thus overbalancing theheavy material in the short leg, and will cause a discharge therefrom.Continuous feeding of mixed material will therefore produce a continuousdischarge of light and heavy materials from the tube. V

In particular the'present invention relates to the construction of aseparator adapted to use this principle of balanced columns. To theaccomplishment of the foregoing and related ends, said invention, then,consists of the means hereinafter fully described and particularlypointed out in the claims.

Serial No. 34,004.

The annexed drawings and the following description set forth in detailcertain mechanism embodying theflinvention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used:

In said annexed drawings Fig. 1 is a vertical sectional view through myimproved basket; 2 is a sectional view on the line 22 of Fig. 1. Fig. 3is a view similar to Fig. 1 but showing diagrammatically the relativepositions of the heavy, mixed and light materials. Fig. 4 is adiagrammatic sectional view of a modified form.

The present basket consists of two truncated cone-shaped members 1 and2, the

small end of truncated cone member 1 being of smaller diameter than thatof member 2, these members each having a flange 3 be tween which ismounted a separator plate 4 the flanges 3 and plate 4 being securedtogether by rivets 5 or other suitable fastening means. This separatorplate 4 is provided adjacent the outer edge with a series of apertures6.

Mounted radially of the separator plate are series of vanes 7 and 8which are generally triangular in shape and which extend along themembers 1 and 2 and radially in- ,ward thus dividing the basket into aseries of pockets and forcing the material being separated to rotatewith the basket. These vanes are mounted both above and below the plate4, the vanes 8 of the lower member being smaller than the vanes 7. Therear corner of the vanes of both series is cut off, forming an opening 9around the basket for equalization of the load.

A horizontal batlle plate or ring 10 is mounted above the separatorplate 4, said baffle plate or ring extending across between the vanesfor a portion of the radial distance and thus forming chutes or pipesfrom the central basket portion to an intermediate portion. The basketis adapted to be rotated and a central drive shaft 12 is provided whichextends through a suitable aperture 13 in the separator plate and into ahousing 14 mounted on the underside thereof. i The shaft is secured inplace by means ofa washer and lock nuts 15 or in any other suitablemanner. Thus the basket is rotatably carried with said shaft which maybe hung in any suitable type of bearing not shown. Extending into theupper open end of the basket are a seriesoi teed ,pipes 16 the outletends 17 of which areadjacent the separator plate 4 and below the levelot-the horizontal baffle plate or ring 10 as best shown in Fig. 1.

The operation of the device is diagrammatically illustrated in Fig. 3.In starting, the basket will be revolved andbrought up to normal speedand then a charge of high density material is fed in, untilan o-verflowoccurs at the bottom and then the regular run of mixed solution is tedinto the basket. As mixed material is fed through the teed pipes 16 itis forced outwardly through the space between the baffle plate 10 andthe spearator plate 4mm the separating area 0. The heavier chargematerial will flow through the holes 6 and finally fills the area a thesize; oi": "the lo'wer vanes 8 and the area b above the plate 4-. Nextto the high density or heavy material will be a layer of the mixedm-cvteriajl to be separated which will occupy the area 0 and then inwardlywill. be a strata of the light separated material over the area d. Itis'of course to be understood that the stratification will not be asdefinite as indicated as there will be no line ofabsolute demarcationbetween layers but in a general way the condition illustrated will bemaintained.

Once the basket is fully charged andthe separated condition obtained,the addition ofmore mixedmaterial will cause a discharge, the lightmaterial being discharged through the upper central 4 opening and beingcaught in any suitable container while the heavy material increasingwill cause a portion thereof to tail tronrthe bottom opening until abalanced condition 'is again obtained. Continuous feeding of the mixedmaterial will therefore cause a continuous flow: of the separatedmaterials from the two basket members. 7

It is to be understood "that the basket need not have a V shaped wall asit is obvious that'the wall maybe curved or formed as shown in Fig. hinwhich form the basket 20 is cylindrical with horizontal flanges 21 and22 at the ends the flange 21having an opening 23 of smaller diameter than the opening 24 in flange 22. The vanes 25 and separator plate 26 arethe same as in thegpreceding form and a bafiie plate'or ring27 isalso'used aspreviously described. Itis only necessary to provide thepockets above and below the separator plate, one set of'the pocketsbeing larger than the other and having its discharge edge of lessdiameter.

It is also to be understood that suitable dis.- charge openingsmay beformed in" thewall,

the radial distance from the axis of rotation ,partment beingot other, aseparator plate mounted between vanes on the walls of said'comp to theopenings determining the action of the device.

Other modes of applying the principle of. my invention may be employedby me instead of the one explained, change being made as regards themechanism herein disclosed, provided the means stated by any taching twoopen-ended coneshaped memberstogether along their largest diameter, aseparator plate-mounted at thcjunctionoi such members and havingapertures allowing communication between said members,

a seriesof vertical vanes in said members tending; into the body oft-hematerial being separated, and-means for feeding material "to beseparatedto said separator plate.

2. A centrifugal separator "basket conip'rising a shell of the-shape oftwo truncated cones joined attheir'largest diameters, one Offldltl coneshaving a smaller outlet opening than the ot er, a separator platemounted between said two cones and provided with openings adjacent thecones to permit flow oi material to both sides of said plate,

radial vanes on the Walls of said cones to force the material. to rotatewith said basket,

and a battle-plate parallel with said separator plate and adapted toforce the material fed into said has ct into an unseparated strata ofthematerial undergoing separation. I

3. A centrifugal separator bashetiior use .with a separator using theprinciple oi hal- 'anced columns, comprising two open ended hollowcompartments, joinedat th rlargest diameters,the cischarge end of one-oinsaid two comparti nents and provided with openings adjacent the\VfillhO PGTllll'il flow or material tobothsides of said plate, radial'tmentsto force material to rotate with sard basket, and a bailleplate'paral lel 'with'said separator plate and adapted to toreethematerial ted into "saidbas'ket into an unseparated strata of thematerial undergoing separ-ation.

Signed by me this25th day of May, 1925.

WALTER J. BLANCIdARD.

ler diameteh than the i

